CBSE Class 12th Physics | Class 12th Physics Practical

Check out term-wise evaluation schemes, experiments, and activities to prepare and score well in your class 12th Physics practicals. Get to know other details related to CBSE Class 12th Physics Practical.

For the academic session of 2022, the exams will be conducted twice a year. Students have to give two practicals for CBSE Class 12th Physics for Term 1 and 2. However, the CBSE Class 12th Physics Practical contains 30 marks which will now be divided into two terms, and hence, both the terms will be 15 marks each. Students must know the types of experiments and activities to perform to ace the Term 1 and 2 examinations.

Latest News on CBSE 12th

The CBSE is responsible for conducting class 12th physics exams every year. The CBSE class 12th physics exam is divided into theory and practical exams, constituting 100 marks. The board recently decided to change the exam pattern and mark scheme along with the syllabus/curriculum. Furthermore, the syllabus has been reduced by 30% in all the streams' subjects.

One of the most significant courses in Class 12 is Physics. As the CBSE test approaches, students become preoccupied with studying for various courses. To fully comprehend all of the ideas in CBSE 12th standard Physics, students must be familiar with the experiments and theorems, laws, and numbers. We have provided all the information regarding the CBSE class 12th physics practical, like the evaluation scheme, experiments, and activities to prepare and score well.

About CBSE 12th Physics Practical Exam

Students must submit the following records at the time of the CBSE class 12 Physics practical exam:

Term 1: Schools will conduct the first term practical examinations by CBSE guidelines. Students must submit a record of at least 4 experiments and 3 activities to be demonstrated by the teacher at the first term test.

Term 2: Schools will organize the second term practical examinations by CBSE guidelines, and internal and external observers will conduct vivas. The teacher must demonstrate at least 4 Experiments and 3 Activities in the record that students must provide at the Term 2 examination.

CBSE 12th Term 1 Physics Practical

The board decided to change its curriculum and its exam pattern and marking scheme. For the academic year 2022, the syllabus has been reduced by 30%. The marking scheme for CBSE class 12th Term 1 Physics practical examinations is here.

Term 1 Evaluation Scheme

Time Allowed: Three hour Max. Marks: 30

Two experiments to be performed by students at time of examination	8 marks
Practical record [experiments and activities]	2 marks
Viva on experiments, and activities	5 marks
Total	15 marks

Experiments assigned for Term I

To determine resistivity of two / three wires by plotting a graph between potential difference
versus current.
To find resistance of a given wire / standard resistor using metre bridge.
OR
To verify the laws of combination (series) of resistances using a metre bridge.
OR
To verify the laws of combination (parallel) of resistances using a metre bridge.
To compare the EMF of two given primary cells using potentiometer.
OR
To determine the internal resistance of given primary cell using potentiometer.
To determine resistance of a galvanometer by half-deflection method and to find its
figure of merit.
To convert the given galvanometer (of known resistance and figure of merit) into a
voltmeter of desired range and to verify the same.
OR
To convert the given galvanometer (of known resistance and figure of merit) into an
ammeter of desired range and to verify the same.
To find the frequency of AC mains with a sonometer.

Activities assigned for Term I

To measure the resistance and impedance of an inductor with or without iron core.
To measure resistance, voltage (AC/DC), current (AC) and check continuity of a given
circuit using multimeter.
To assemble a household circuit comprising three bulbs, three (on/off) switches, a fuse
and a power source.
To assemble the components of a given electrical circuit.
To study the variation in potential drop with length of a wire for a steady current.
To draw the diagram of a given open circuit comprising at least a battery,
resistor/rheostat, key, ammeter and voltmeter. Mark the components that are not
connected in proper order and correct the circuit and also the circuit diagram.

CBSE 12th Term 2 Physics Practical

The Term 2 examinations will be held in March-April (tentative) according to their newly introduced CBSE guidelines. Practicals for the same will be conducted a month before the commencement of the main Term 2 exams. Given below is the table are the marks distribution of CBSE class 12th Term 2 Physics practicals:

Term 2 Evaluation Scheme

Time Allowed: Three hours Max. Marks: 30

Two experiments to be performed by students at time of examination	8 marks
Practical record [experiments and activities]	2 marks
Viva on experiments, and activities	5 marks
Total	15 marks

Experiments assigned for Term 2

To find the focal length of a convex lens by plotting graphs between u and v or between 1/u
and1/v.
To find the focal length of a convex mirror, using a convex lens.
OR
To find the focal length of a concave lens, using a convex lens.
To determine the angle of minimum deviation for a given prism by plotting a graph between angle
of incidence and angle of deviation.
To determine the refractive index of a glass slab using a traveling microscope.
To find the refractive index of a liquid by using the convex lens and plane mirror.
To draw the I-V characteristic curve for a p-n junction diode in forwarding and reverse biases.

Activities assigned for Term 2

To identify a diode, an LED, a resistor, and a capacitor from a diverse collection of such items.
Use of multimeter to see the unidirectional flow of current in the case of a diode and an LED and
check whether a given electronic component (e.g., diode) is in working order.
To study the effect of light intensity (by varying distance of the source) on an LDR.
To observe refraction and lateral deviation of a beam of light incident obliquely on a glass slab.
To observe the polarization of light using two Polaroids.
To observe diffraction of light due to a thin slit.
To study the nature and size of the image formed by a (i) convex lens, and (ii) concave mirror on a
screen by using a candle and a screen (for different distances of the candle from the
lens/mirror).
To obtain a lens combination with the specified focal length by using two lenses from the given
set of lenses.

Note:

Senior Secondary Education is a stage of transition from general education to discipline-based focus on curriculum. Students who have chosen science have physics as one of the core subjects for students pursuing a career in science. Physics as a subject requires clarity of concept and practice. Therefore, students are required to be aware of the CBSE class 12th physics practical experiments and activities.

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